Resonance Assembly
All materials have  resonance  frequencies when sound breaks a wine glass.. due the resonance the causing a fracture ... if then the vibration technique is then used for assembly the growth of metals may be possible ..just a thought something to examine as space craft will also require repair material upon long flights... Molecular assembly with the use of frequency also then in tandem with a vibration / resonance in tandem with magnetic fields and or temperature / pressure ( elemental gas ) may then may yield crystal growth of metal matrix.  ie. growing metals by quark effectivity, by polarity of of basal hydrogen atoms then as the building block.... to then attach to the crystal structure of metals.

Geoengineering - Climate Change Mitigation

Design Desk Inc.